Spinning-spindle.



G. H. CHAPMAN.

SPINNING SPINDLE.

APPLICATION FILED APR. 16, 1908.

1,661,267. Patented May13,191

" 25 videdwie.

. 1 bolster.

50 to fit the top of the bobbin,

' 'Y-CHARILEsH. CHAPMAN,y or wmoni-ls'rnn,

'TIQN or MAINE.

A(rIRLA-VIIY SPINDLE COMPANY, OF WINCHESTER, MASSACHUSETTS, A CORPORA;

i To lllwlwm-z't mag/concern:

' acertfain new and useful Improvement inf Spinning-spindles, of whichthe following' -i S -.ful l-, clear, and exact description.-

" This inventionis in thenature of "fan-iur' 105:'

p rovement upon the invention for which'I received .Letters'latent No.875,503, 'dated .'.2.December 31,1907.- f

` .'Asin the inventionfo the spindle is'supported .bearings Lsecured'in""'th'e the patent, so here. and` turns in ball-' upper "and lower:-v` ve'nds. of a bolster,"and thisbolsteris held suspended by its uppercylindrical portion .-in a bo1ster-case,"a'nd.1 ts lower portion 1s vofsmallerdiameterthan 'its upper portion and admits of a limited'latera'lmovement within 'bolste'r'o the patent, the bolster of the preis-ventinventonisnonfiexiblm Abut itv is prolaterally projecting springswhichcontrolthe lirnited lateral moven'ient .1 referred to. n

Theseand 'other' features, hel-e111 par,

`fiticularly pointed out andV claimed, consti- Atute the presentinvention.`

4Infthe accnipanying .dra'\\'ings, -illustrating the invention, intheseveral figures of wluch like parts' are similarly designated. Figui-e1a longitudinal section with the spindle and' bobbln broken out. Fig. 2an elevation of the bolster detached. Fig. is an .ele\'ation of tl leupper portion ofthe Fig. 4 is a bottom plan view ofthe bolster,` Figa 5is an elevation of the-lower portion of the bolster. Fig. (i is anelevation .of a' bolster-supporting tube. Fig. 7 is a longitudinalsection of the bolster support-l in tube. he bolster-easel, has theoil-well 2, and

- the screwthread 3, nut 4, base oil-reservoir 6,'andupright 7,substantially as in the patbut any or all-of these parts ent referredto,

'may be of other approved construction.

' The spindle 8 has a cylindrical portion 9 r"and the blade of thespindle tapers very slightly to a point indicated by the transverselinebelow the com 10, md from thisfpemt the. spindle SPINNING-sprunrin.

. Speccatiniof Letters Patent.` Y. Application 1aed Apu-1 1s,

=a ter s et forth.

MA-s'sAoHUsnfrTs, AssIGNoR To CHAPMAN Patented May l1.3, 1913.

isos. seriaiN'Azzsrs. 4

tapers quite rapidly and terminates inv an inverted cone 11. The uprightis counterbored and shouldered'at 12, to recei\'e 'the supporting tube13, which is firmly held in and extends above they upright 7.A Theinvs-ide diarneter Aof the supporting tube' 13 is thefsameas .that ofthe oilwell 2 in the bolsterlea'se' l'." The supporting tube '.13 islongitudinallyslotted aty 14, the said slot Ll endingiwith-an inwardlyvand .upwardly 'for purposes hereinta ering shoulder 15 'The supportingtube 13 is 65 also provided with 'a hole. 16 which admits the.oil'ffroni the oil-'r eser\'oi r;6V into the oili well2.-IThe"oil-reservoir 6 is supplied with oil f ln'Qllgl' a feed tbel'which. is covered witlra capf'1'8." The bolster' 1 9 is constructed 70with-an enlarged upper en d, having a flared o r -outwardly-tapered.portion .20, above `which` a cylindrical portion 21, to receive 4andhold, the hardened-steel v'ball-cup 22 which is forcedinto-anddownagainst the tapered portion 20 of the bolster, and there.

by'` the ball-cup 22 'is alined. concentrically with the bolster..Theupper'edge offthe cylindricaliportion 21 .of the bolster -19 isset inaround'theupperland tapered portion of the ball-cup 22 and thereby frmlylsecures the ball-cup `22in the enlarged upper end ofthe bo ster. L19.Bearing-balls 23 .are placed in the ball-cup 22 and aroundthe -cone'10,1111 of whichare of hardened-steel `and 85 form in the enlarged upperend olf the .bolster what is known as the bolsterbearing. Below theenlarged upper end of the bolster is a cylindrical portion 24,'aud nextbelow it is a downwardly tapered portioi125, Tand-.9o below the taperedportion 25' iS a cylindrical portieri 2G.which extends from-below thetapered 'portion 25 to the bottomj of the bolster. l

27 is a spring having an outwardly turned lip 28.' .This spring may bemade bysawin two ne parallel kerfsthrough the tapered' portion 25 of thebolster anda partiof' the cylindrical-portion 24, as shown in Figs. 1, 2and 3; The objectof thespring 27 and `1 i`pi100 .-28 =is to engage thelongitudinal slot 14' in the supportin tube :13 and thereby AFevent:

the bolsterY 19 rom rotating .with the spindle. vWhen -the bolsteris'being drawn out ofthe ,bolster-case, after the stop-pin isjturned-105 from over the horizontal vflange Aof the whirl'.

.a inst the interior of the oils-well 2, as

s own in Fig. 1, and yie'ldinglI hold the lower end of the bolster,sothat t rough the action ofy these springs the bolster may conform tothe' motion o the spindle when said spindle carries an unbalanced load.The inwardly curved upper ends ofthesprmgs 29, and the longitudinal slot14 in the supporting tube 13, admitof the vertical, more ment of thebolster with the spindle.

T he lower end. of' the bolster v19 is in-' ternally screvcfthreadedv toreceive' the` spindlestep '31 which is externally screw threaded to'tsaid internal; scrswthrad.' The step 31 has a hole 32 through its center,and is providedwith ,a ball-race""in its up# per end torecei-v' theballs 33. The conical end 11 of the spindle isstepped in the hole 32 andbears and rotates upon-the balls 33.. The step 31, as shown in Fig. 4,has a number'of notches or nicks '34 cut across its bottom, and aisprng35 cut in the lower. end

lof the bolster in a manner similar to the cutting out of spring 27, eeeFig. 5, has an linr turned lip 36 which enters one of the notches in thestep 31, when. in line with the spring 35, and loc'ks the step fromturning in either direction, and so l'xe's the adjustment of the ste inthe bolster. The .cone 11, balls 33, an step 31 are of hardened-steel.

The whirl-base 37 is secured to the spindle in any suitable way, and 4isada ted to r'ece'ive the bobbin- 38. The whrlase is`recessed internallyfrom its bottom, as at 39,

and ends in a laterally projecting flange 40,

,i which coperates with the sto -pin 41 mounted upon the bolster-base. Te sleevewhirl'has its sleeve 42A forced into the -cavity 39 inthewhirl-base, and is thussecurely' connected with the whirl-base and by.it with the spindle. -I 43 1s the whirland44 the driving-band.' It willbe observed that the counterbore'of the-whirl-base is sufciently largeto receive lthe upper and enlarged ortion of thebolster containing theup er all-bearing, and b this construction o the whirl-base and whir itis possible to use a whirl of the standard diameter, thereby requirin nochan in the diameter or speed of t e drivingrum ,l of the-spinningAframes now in use.

In practical use it' has been found desirable to allow the spindle aslight upward movement to enable the horizontal flange 40 to strike aslight blow against the stoppin .'41 in order to loosen the from thespindle and thereby obviate the necessity possibility of the' sindle'being spr outof true, .and it alsop facilitates the :virdk ofoflin'g and vof piecing' upv broken'ends of yarn.

-lows: .spind1e' into lace, thelibearii balls 23 'are arrange'd'in t eball-c tion 21 of4 the bolster is d to the spindle shown in, 1. Th":whirl-base is next placed upon e s indle the balls 33 are next placed.inthe b A raceof the step 31, and the loclr'i'x'igslfiring 35 is forcedout and may be'held'kmito contact with the step ,play ing an'ordinary-pin between it and bolster; the ste A31'containing theball."38 is thenl screw up into the lowerend'nthc bolsternntl theballs33..co1'ne aainst"'the end ll'of the s i'ndlez T portion 21 is setaboug'ithei all-cup, all as locking spring 35 is allbwed tof rop-intomel o f pulling it oil by `force.^. This avoids the The arts larepreferably lassembled as fol-,7. he cone l1() is ferced down .upon th@est/ep 31- is then adjusted until t espindle fits' freely in its'bearingwithout lateral lay, and thev 4 ofthe notches 34 in the lower :end ofthe .the step and hence vpreventlie step moving in either direction Thewhirl .is next aced up, and around the bolster1 and, force into therecess' in the bottomvof the whirl-base. The spindle,.oone,bolster-bear-l ing, whirl-base, step-bearing and whirl-hair#-y ingbeen'adjusted, the bolster is then placed l in the bolster-case, thespring 27 is forced "in toward the spindle unti'l it enters thesupporting tube 13, and the .bolster is forced down into thebolster-caseuntil ,the tapered step 31, 'thereby to lock the .'adjuatmentcf portion20 rests upon the 'uf per end-'of the snaps into the longitudinal slot-14 in the" tube ,13 and there from rota with thespindle. The sup.porting tube 3 may be, dispensed with, 'andA tube 13, and the lip 28 othe' spring'27 y .preventsthe bolster;

the 'upright 7' extended' to a.' height and trne diameter'tocorrespbndfwith the outside'llialiieter of fthe stra' ht vof Ithe,bolster,' and -a longitu in `.slot may be made in the' interior.oftharight? to 'take' the place ofthe'slotf14 e tube 13; 'hut 'as amatter of eo'nom itis deemed advsable to construct th'ebo ter-case withthe upright tube 13.

As hereinbefore stated, the bolster may be ortion 24 readily extractedfrom 'the bolster-case, be- P' cause the tapered endf15" of the slot 14will cam the lip 2 8 of the spring 27 out ofthe slot 14 when the bolsteris ulled upwardly. The bolster having, been' p aced in position in thebolster-case, the stop-pin 41 is turned around over the `laterallyprojecting, ange 40 of the whirl-base, which prevents t e bolsterand'spindle from being pulled/out iso ofthe bolster-'case Tiles indie,eine, bei.'

- ster, bolster-bearing, step-bearing, whirlbase and `whirl all movelaterally and vertically together.' The cylindrical portion 24 ofthebolster'19'is made to tit with sufficient loos'eness in the upper endof the tube 13 to enable 'the lower end of thespindle .and bolster to-take on the movementfre quired to allow thev spindle and bobbin to Arunsteadily. The plane Aof. the band-pull.

upon the whirl is at ornear the center of the cylindrical portion 240i.the bolsterV and tends, on account of its lateral pressure, to

hold the spindle vin a vertical position, and

the variation ofl the tension of the band willl have no tendency-todeflect the spindle o ut of a perpendicular position.

As alreadg stated, belowthecylindrical. '.portion 24 Vthe bolster tapersto a smaller.

diameter, which hangs suspended in the oil' well 2, vand out of contactwith the inner walls of the bolster-case. This suspended portion of thebolster has a yielding lateral.

support against 'the walls of' the oil-well through `the intermediatesprings 29, and this a mits of a suiicient lateral movement of the lowerportion of the bolster and spindle toenable the spindle to carry anunbalanced load, that would be impossible with a spindle not having thisyielding capacity.

The lateral yielding capacity not only serves;

the purpose to carry an unbalanced load,

but it greatly increases the life of the bear.

ings, from the fact that the vibratory shocks of the spindle `aregreatly'reduced thereby.

In practical operation, spindles of this class revolve ata speed varyingfrom eight to ten thousand revolutions a minute. lVhen an unbalancedload is placed .upon a spindle, or when th spindle is slightly out v ofbalance, the spindle will, as it attains its speed, fake on a gyratorymovement Yaround a center of gravity throughthe spindle and itsunbalanced load and the laterally yielding portion of the bolsterconforms to this -gyratory'movement of the spindle and the spindleand'bobbins will run quite steadily.

In carrying an unbalanced load it is'important to keep a perfectadjustment of the lower end of the spindle in the step-bearing,`

'and this is 'effected .in the present invention,

since thd tension caused `by the band-pull acts to forcethe'step-bearing into proper ad.

on to the balls in the upper bearing, therebyi .keeping themcontinuallylubricated. Thi

journal, type.

on the spindle by centrifugal'force,owing A to. the, increasing diameterof the spindles and is spunout andthrown off at the upper end of thelowr taper of the cone 10, --and`f movementofthe oil. is facilitated bythe up iard and outward-.taper ofthe. cone -10 The spindle, cone,whirl-base .and whirl are suppprtedand revolve inthe bolster-bearing'75.

and step-bearing and have no other suppor or contact. The invention isnot limitedto the details;

of construction shown and described, sincej.

any wellllmown equivalent may be used which comes within the spiritofthe inven' tion.. Moreover, the invention is applicable. tobolster-bearings and step-bearings of-.th

.-1. fk bolster-case, adapted to receive-and .5.: 'sustaln a bolster andspindle, said'bolstercase havinga supporting tube slotted Ion itudinallyandadapted to be en aged by t e bolster toprevent rotation o with thespindle, a bolster having an enlarged upper end, a spring below said endto engage the longitudinal slot in the supporting tube, and a series oflaterally. projectmg springs to-engage the interior walls of thebolster-case, all of said springs being cut integrally from the metal ofthe bolster 'and adapted to move both laterally and vertically with thespindle and bolster.

2. Aspindle, a' bolster-case, and .a bolster 100 having bearings in itfor receiving and supportingtsh'e spindle, said bolster 1ooselyconnected with vand-supported at its upper por-4 tion by'jthebolster-caseand havin its lower portionfofles's diameter than the interior of .105

the bolster-case and provided with laterally projecting springs cutintegrally from the .material of the bolster and in 'contact with theinner surface of the walls of the bolster-v CaSe.

3. A spindle, a bolster-case2 and a bolster having bearings in it forreceiving and'sup porting the spindle, said bolster looselyconnectedwith and supported at its upper portion by the bolster-case .and havingits lower portion. of less diameterthan the interior of the bolster-caseand provided with integral laterallyprojecting springs bulging outupwardly therefrom and in contact with the inner surface of the wallsofthe 12o bolster-case.

4. A spindle, a bolster-case, and a bolster having bearings in it forreceiving and supporting the spindle, said bolster loosely conr nectedwith and supported vat its upper por- 125 tion by the bolster-ease andhaving its lower portion of less diameter than the interior of thebolster-case and provided with intelgrallaterally projecting springs-bulging out upwardly thercfromand having their.

the bolster 90 l ally projecting springs in conue;withg'thobolster-case.

a 6. Aspindle, a bolster-caee, .andv a bolster having bearings in it forreceiving and Supportingthe spindle, sadbolster having a,

cylindrical upper port-ion by which it is s u's-A tained in the'bolster-case, a nexo adjacent downwardly tapering portion having anintegral laterally projecting springior detachablyfholding the bolster1n .the vblstercase, and a termm'al cylindrical porlon next below thetapering -portionand having intefk I gral laterally -projecting'springsin contact ,f7. Aspindle, a bolstercase2 and a holster fhavmg bearingsin it foryreceiving and'sup-' with the bolster-lease. l

porting the spindle', sa id `bolster having a `cylindrical upperAportion by which it. is-sl1stained-in the bolster-case, a". nextadjacent 'case Aand locl it againsl'fl'otation,4 andga.

terminal'. cylindrical ortion next below the tapering portion unf'having'inegral laterally 'proictingpnn'gs in.. @nw-with thebolster-case. .A

In testimony whereof Ihave .hereuntoset B.. Nevin.

-teg'raz''laterally -projectngfspring-for de-f- 1 Vinchably holdingthe'. bols'terj in the bolster-

